Fix provider icons for similar providers.
Fix provider icons for similar providers.

e.g. Amazon has 9 different providers which should show the
same icon. Similar case in Rackspace too.

kelonye/mist.io,DimensionDataCBUSydney/mist.io,afivos/mist.io,kelonye/mist.io,johnnyWalnut/mist.io,Lao-liu/mist.io,johnnyWalnut/mist.io,DimensionDataCBUSydney/mist.io,DimensionDataCBUSydney/mist.io,johnnyWalnut/mist.io,Lao-liu/mist.io,afivos/mist.io,Lao-liu/mist.io,zBMNForks/mist.io,munkiat/mist.io,Lao-liu/mist.io,munkiat/mist.io,afivos/mist.io,kelonye/mist.io,DimensionDataCBUSydney/mist.io,zBMNForks/mist.io,munkiat/mist.io,munkiat/mist.io,zBMNForks/mist.io